Abstract
Heating [γ-SiW10O36]8− with rhodium (II) acetate at 60 °C results in the formation of [SiW11O39{RhCl}]6−, isolated as K8[SiW11O39{RhCl}][Rh2(CH3COO)4Cl2]·8H2O (1). Unique feature of the crystal structure of 1 is fully ordered Keggin anion, allowing localization of the {RhCl}2+ fragment directly from X-ray diffraction data (Rh-Cl 2.212(5) Å, Rh-O 1.96–2.13 Å). The product was also characterized by XRPD, IR and elemental analysis. According to coupled HPLC-ICP-AES technique the [SiW11O39{RhCl}]6− anion selectively forms in the reaction.
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